<?php
/*
Copyright 2019 UUP dump API authors

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

require_once dirname(__FILE__).'/../listid.php';

function uupGetInfoTexts() {
    $fancyLangNames = array(
        'ar-sa' => 'Arabic (Saudi Arabia)',
        'bg-bg' => 'Bulgarian',
        'cs-cz' => 'Czech',
        'da-dk' => 'Danish',
        'de-de' => 'German',
        'el-gr' => 'Greek',
        'en-gb' => 'English (United Kingdom)',
        'en-us' => 'English (United States)',
        'es-es' => 'Spanish (Spain)',
        'es-mx' => 'Spanish (Mexico)',
        'et-ee' => 'Estonian',
        'fi-fi' => 'Finnish',
        'fr-ca' => 'French (Canada)',
        'fr-fr' => 'French (France)',
        'he-il' => 'Hebrew',
        'hr-hr' => 'Croatian',
        'hu-hu' => 'Hungarian',
        'it-it' => 'Italian',
        'ja-jp' => 'Japanese',
        'ko-kr' => 'Korean',
        'lt-lt' => 'Lithuanian',
        'lv-lv' => 'Latvian',
        'nb-no' => 'Norwegian (Bokmal)',
        'nl-nl' => 'Dutch',
        'pl-pl' => 'Polish',
        'pt-br' => 'Portuguese (Brazil)',
        'pt-pt' => 'Portuguese (Portugal)',
        'ro-ro' => 'Romanian',
        'ru-ru' => 'Russian',
        'sk-sk' => 'Slovak',
        'sl-si' => 'Slovenian',
        'sr-latn-rs' => 'Serbian (Latin)',
        'sv-se' => 'Swedish',
        'th-th' => 'Thai',
        'tr-tr' => 'Turkish',
        'uk-ua' => 'Ukrainian',
        'zh-cn' => 'Chinese (Simplified)',
        'zh-hk' => 'Chinese (Hong Kong)',
        'zh-tw' => 'Chinese (Traditional)',
    );

    $fancyEditionNames = array(
        'CLOUD' => 'Windows 10 S',
        'CLOUDN' => 'Windows 10 S N',
        'CLOUDE' => 'Windows 10 Lean',
        'CORE' => 'Windows 10 Home',
        'CORECOUNTRYSPECIFIC' => 'Windows 10 Home China',
        'COREN' => 'Windows 10 Home N',
        'CORESINGLELANGUAGE' => 'Windows 10 Home Single Language',
        'EDUCATION' => 'Windows 10 Education',
        'EDUCATIONN' => 'Windows 10 Education N',
        'ENTERPRISE' => 'Windows 10 Enterprise',
        'ENTERPRISEN' => 'Windows 10 Enterprise N',
        'PPIPRO' => 'Windows 10 Team',
        'PROFESSIONAL' => 'Windows 10 Pro',
        'PROFESSIONALN' => 'Windows 10 Pro N',
    );

    $allEditions = array(
        'ANALOGONECORE',
        'ANDROMEDA',
        'CLOUD',
        'CLOUDE',
        'CLOUDN',
        'CORE',
        'CORECOUNTRYSPECIFIC',
        'COREN',
        'CORESINGLELANGUAGE',
        'CORESYSTEMSERVER',
        'EDUCATION',
        'EDUCATIONN',
        'EMBEDDED',
        'EMBEDDEDE',
        'EMBEDDEDEEVAL',
        'EMBEDDEDEVAL',
        'ENTERPRISE',
        'ENTERPRISEEVAL',
        'ENTERPRISEG',
        'ENTERPRISEGN',
        'ENTERPRISEN',
        'ENTERPRISENEVAL',
        'ENTERPRISES',
        'ENTERPRISESEVAL',
        'ENTERPRISESN',
        'ENTERPRISESNEVAL',
        'IOTUAP',
        'MOBILECORE',
        'ONECOREUPDATEOS',
        'PPIPRO',
        'PROFESSIONAL',
        'PROFESSIONALCOUNTRYSPECIFIC',
        'PROFESSIONALEDUCATION',
        'PROFESSIONALEDUCATIONN',
        'PROFESSIONALN',
        'PROFESSIONALSINGLELANGUAGE',
        'PROFESSIONALWORKSTATION',
        'PROFESSIONALWORKSTATIONN',
        'SERVERARM64',
        'SERVERARM64CORE',
        'SERVERAZURECOR',
        'SERVERAZURECORCORE',
        'SERVERAZURENANO',
        'SERVERAZURENANOCORE',
        'SERVERCLOUDSTORAGE',
        'SERVERCLOUDSTORAGECORE',
        'SERVERDATACENTER',
        'SERVERDATACENTERACOR',
        'SERVERDATACENTERACORCORE',
        'SERVERDATACENTERCOR',
        'SERVERDATACENTERCORCORE',
        'SERVERDATACENTERCORE',
        'SERVERDATACENTEREVAL',
        'SERVERDATACENTEREVALCOR',
        'SERVERDATACENTEREVALCORCORE',
        'SERVERDATACENTEREVALCORE',
        'SERVERDATACENTERNANO',
        'SERVERDATACENTERNANOCORE',
        'SERVERHYPERCORE',
        'SERVERRDSH',
        'SERVERRDSHCORE',
        'SERVERSOLUTION',
        'SERVERSOLUTIONCORE',
        'SERVERSTANDARD',
        'SERVERSTANDARDACOR',
        'SERVERSTANDARDACORCORE',
        'SERVERSTANDARDCOR',
        'SERVERSTANDARDCORCORE',
        'SERVERSTANDARDCORE',
        'SERVERSTANDARDEVAL',
        'SERVERSTANDARDEVALCOR',
        'SERVERSTANDARDEVALCORCORE',
        'SERVERSTANDARDEVALCORE',
        'SERVERSTANDARDNANO',
        'SERVERSTANDARDNANOCORE',
        'SERVERSTORAGESTANDARD',
        'SERVERSTORAGESTANDARDCORE',
        'SERVERSTORAGESTANDARDEVAL',
        'SERVERSTORAGESTANDARDEVALCORE',
        'SERVERSTORAGEWORKGROUP',
        'SERVERSTORAGEWORKGROUPCORE',
        'SERVERSTORAGEWORKGROUPEVAL',
        'SERVERSTORAGEWORKGROUPEVALCORE',
        'SERVERWEB',
        'SERVERWEBCORE',
        'STARTER',
        'STARTERN',
    );

    return array(
        'fancyEditionNames' => $fancyEditionNames,
        'fancyLangNames' => $fancyLangNames,
        'allEditions' => $allEditions,
    );
}

function uupGetGenPacks($build = 15063, $arch = null, $updateId = null) {
    $internalPacks = dirname(__FILE__).'/packs';

    if(!file_exists($internalPacks.'/metadata.json')) {
        if(!uupCreateInternalPacksMetadata($internalPacks)) {
            return array();
        }
    }

    if(!empty($updateId)) {
        if(file_exists('packs/'.$updateId.'.json.gz')) {
            $genPack = @gzdecode(@file_get_contents('packs/'.$updateId.'.json.gz'));
            if(empty($genPack)) return array();

            $genPack = json_decode($genPack, 1);
            return $genPack;
        }
    }

    $metadata = @file_get_contents($internalPacks.'/metadata.json');
    if(empty($metadata)) {
        return array();
    } else {
        $metadata = json_decode($metadata, 1);
    }

    $hashDetermined = 0;
    $useAllHashesForBuild = 0;

    if($updateId) {
        if(isset($metadata['knownIds'][$updateId])) {
            $hash = $metadata['knownIds'][$updateId];
            $hashDetermined = 1;
        }
    }

    if(!$hashDetermined) {
        foreach($metadata['knownBuilds'] as $buildNum => $val) {
            if($build < $buildNum) continue;
            $useBuild = $buildNum;
            break;
        }

        if(!isset($useBuild)) {
            return array();
        }

        if(!$arch && !isset($metadata['knownBuilds'][$useBuild][$arch])) {
            $genPack = array();
            foreach($metadata['knownBuilds'][$useBuild] as $hash) {
                $temp = @gzdecode(@file_get_contents($internalPacks.'/'.$hash.'.json.gz'));
                if(!empty($temp)) {
                    $temp = json_decode($temp, 1);
                    $genPack = array_merge_recursive($genPack, $temp);
                    unset($temp);
                }
            }
        } elseif(!isset($metadata['knownBuilds'][$useBuild][$arch])) {
            return array();
        } else {
            $hash = $metadata['knownBuilds'][$useBuild][$arch];
        }
    }

    if(!isset($genPack)) {
        $genPack = @gzdecode(@file_get_contents($internalPacks.'/'.$hash.'.json.gz'));
        if(!empty($genPack)) {
            $genPack = json_decode($genPack, 1);
        } else {
            $genPack = array();
        }
    }

    return $genPack;
}

//Function to regenerate internal packs. Should not be used when not needed.
function uupCreateInternalPacksMetadata($internalPacks) {
    $metadataCreationAllowed = 0;
    if(!$metadataCreationAllowed) return false;

    $builds = uupListIds();
    if(isset($ids['error'])) {
        return false;
    }

    $builds = $builds['builds'];

    if(!file_exists('packs')) return false;

    if(!file_exists($internalPacks)) {
        if(!mkdir($internalPacks)) {
            return false;
        }
    } else {
        rmdir($internalPacks);
        mkdir($internalPacks);
    }

    $files = scandir('packs');
    $files = preg_grep('/\.json.gz$/', $files);

    $packs = array();
    foreach($builds as $build) {
        $uuid = $build['uuid'];
        $file = $uuid.'.json.gz';

        if(!file_exists('packs/'.$file)) continue;

        $genPack = @gzdecode(@file_get_contents('packs/'.$file));
        $hash = hash('sha1', $genPack);

        if(!file_exists($internalPacks.'/'.$hash.'.json.gz')) {
            if(!copy('packs/'.$file, $internalPacks.'/'.$hash.'.json.gz')) {
                return false;
            }
        }

        $packs['knownIds'][$uuid] = $hash;

        $buildNum = explode('.', $build['build']);
        $buildNum = $buildNum[0];

        $packs['knownBuilds'][$buildNum][$build['arch']] = $hash;
    }

    file_put_contents($internalPacks.'/metadata.json', json_encode($packs)."\n");
    return true;
}

//Emulation of legacy packs. Do not use in new scripts due to extremely slow process.
function uupGetPacks($build = 15063) {
    $returnArray = uupGetInfoTexts();
    $genPack = uupGetGenPacks($build);

    foreach($genPack as $lang => $editions) {
        $packsForLangs[$lang] = array_keys($editions);
        $packsForLangs[$lang][] = $lang;

        foreach(array_keys($editions) as $edition) {
            foreach($editions[$edition] as $name) {
                $newName = preg_replace('/^cabs_|^metadataesd_|~31bf3856ad364e35/i', '', $name);
                $newName = preg_replace('/~~\.|~\./', '.', $newName);
                $newName = preg_replace('/~/', '-', $newName);
                $newName = strtolower($newName);
                $packs[$lang][$edition][] = $newName;
            }

            $editionPacks[$edition] = $edition;
            $packs[$edition][$edition] = array();
            $skipNeutral[$edition] = 1;
            $skipLangPack[$edition] = 1;
        }
    }

    $returnArray['packs'] = $packs;
    $returnArray['packsForLangs'] = $packsForLangs;
    $returnArray['editionPacks'] = $editionPacks;
    $returnArray['skipNeutral'] = $skipNeutral;
    $returnArray['skipLangPack'] = $skipLangPack;

    return $returnArray;
}
